133043204221 has 4 divisors (see below), whose sum is σ = 133050680892. Its totient is φ = 133035727552.

The previous prime is 133043204209. The next prime is 133043204227. The reversal of 133043204221 is 122402340331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69445425625 + 63597778596 = 263525^2 + 252186^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133043204221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133043204227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3711580 + ... + 3747253.

It is an arithmetic number, because the mean of its divisors is an integer number (33262670223).

Almost surely, 2^133043204221 is an apocalyptic number.

It is an amenable number.

133043204221 is a deficient number, since it is larger than the sum of its proper divisors (7476671).

133043204221 is an equidigital number, since it uses as much as digits as its factorization.

133043204221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7476670.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 133043204221 its reverse (122402340331), we get a palindrome (255445544552).

The spelling of 133043204221 in words is "one hundred thirty-three billion, forty-three million, two hundred four thousand, two hundred twenty-one".